Nausea and dry heaving with phlegm in the throat may be caused by rhinitis, chronic pharyngitis, reflux esophagitis, bronchial dilatation and so on.
1. Rhinitis: bacterial and viral infections, allergen stimulation and other factors lead to inflammatory exudation, congestion and other lesions of the nasal mucosa, nasal secretions flow back into the pharynx, stimulating the pharyngeal mucosa causing the symptoms.
2. Chronic pharyngitis: chronic inflammatory reaction of pharynx caused by long-term recurrent infection of pharyngeal mucosa, smoking and alcohol abuse, environmental and climatic factors, and lymphoid follicle hyperplasia of the posterior pharyngeal wall, which will lead to this symptom.
3. Reflux esophagitis: gastric contents reflux to the pharynx through the esophagus after the dysfunction of lower esophageal sphincter, which stimulates the local mucous membrane and leads to this symptom, and it is mostly accompanied by acid reflux and heartburn.
4. Bronchial dilatation: chronic inflammation of the muscles and elastic tissues around the bronchial tubes after the destruction of lesions, resulting in bronchial dilatation and deformation of the bronchial tubes, the typical chronic cough, cough sputum, hemoptysis and other symptoms.
Phlegm in the throat nausea and dry heaves may be related to a variety of factors, it is recommended to consult a doctor for a clear diagnosis.